Drum Fittings | McMaster-Carr

	Material Material

Plastic

Stainless
Steel

Steel

Brass

Iron

Rubber

	Pipe Size Pipe Size

3/4

	Thread Type Thread Type

	System of Measurement System of Measurement

Metric

Inch

	Thread Size Thread Size

	Gender Gender

Male

Female

	Drum Plug Type Drum Plug Type

Standard

Pressure Relief

Vacuum Relief

	Color Color

	White		Gray
	Blue		Semi- Clear
	Brown		Red
	Black

	Inlet Pipe Size Inlet Pipe Size

1/2

3/4

1 1/2

	Body Material Body Material

	Outlet Connection Type Outlet Connection Type


Spout	Pipe

Hose

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Seal Material Seal Material

Rubber

Plastic

	Inlet Thread Type Inlet Thread Type

NPT

NPS

UNF

	Maximum Temperature Maximum Temperature

	Outlet OD Outlet OD

	For Drum Orientation For Drum Orientation

Vertical

Horizontal

	Drum Vent Type Drum Vent Type

Pressure Relief

Vacuum Relief

	Lock Type Lock Type

Padlockable

Padlock

	For Use With For Use With

Air

Oil

Water

	Outlet Thread Size Outlet Thread Size

3/4"

13/16"-27

	Cap Material Cap Material

Steel

Aluminum

	Maximum Opening Pressure Maximum Opening Pressure

4 psi

8 psi

15 psi

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97 Products

About Noise, Filtration, and Flow Ratings

For installation and removal of these plugs, use drum-plug wrenches.

Plugs with PTFE seals stand up to corrosive chemicals such as nitric acid.

Style D have a M64 thread size, which is also known as Buttress threads.

Drum-plug caps (sold separately) fit over drum plugs to provide dust protection as well as evidence of tampering. They have a breakaway seal and are for one-time use.

Polyethylene Plastic

Drum Plugs												Crimp-On Drum Plug Caps			Crimping Tools for Drum Plug Caps
Style	Drum Plug Type	Color	Seal Material	Pipe/Thread Size	Gender	Max. Temp., °F	Opening Pressure Range	Features	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.		Each
A	Standard	White	__	3/4 NPSM	Male	125°	__	__	5	0000000	00000	10	0000000	00000	0000000	0000000
A	Pressure Relief, Vacuum Relief	White	__	3/4 NPSM	Male	125°	1 psi-4 psi	Vent	5	0000000	00000	10	0000000	0000	0000000	000000
B	Standard	White	__	2 NPSM	Male	125°	__	__	5	0000000	00000	10	0000000	00000	0000000	000000
B	Pressure Relief, Vacuum Relief	White	EPDM Rubber	2 NPSM	Male	125°	1 psi-4 psi	Vent	5	0000000	00000	10	0000000	00000	0000000	000000
C	Standard	White	__	2 NPSM	Male	125°	__	3/4 NPSM Faucet Knockout	5	0000000	00000	10	0000000	00000	0000000	000000
D	Standard	White	EPDM Rubber	M64 Metric	Male	125°	__	3/4 NPSM Faucet Knockout	5	0000000	00000	10	0000000	00000	0000000	000000

Polypropylene Plastic

Drum Plugs												Crimp-On Drum Plug Caps			Crimping Tools for Drum Plug Caps
Style	Drum Plug Type	Color	Seal Material	Pipe/Thread Size	Gender	Max. Temp., °F	Opening Pressure Range	Features	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.		Each
A	Standard	Gray	__	3/4 NPSM	Male	125°	__	__	5	0000000	00000	10	0000000	00000	0000000	0000000
A	Pressure Relief, Vacuum Relief	Gray	__	3/4 NPSM	Male	125°	1 psi-4 psi	Vent	5	0000000	00000	10	0000000	0000	0000000	000000
B	Standard	Gray	__	2 NPSM	Male	125°	__	__	5	0000000	00000	10	0000000	00000	0000000	000000
B	Pressure Relief, Vacuum Relief	White	EPDM Rubber	2 NPSM	Male	125°	1 psi-4 psi	Vent	5	0000000	00000	10	0000000	00000	0000000	000000
C	Standard	Gray	__	2 NPSM	Male	125°	__	3/4 NPSM Faucet Knockout	5	0000000	00000	10	0000000	00000	0000000	000000
D	Standard	White	__	M64 Metric	Male	125°	__	3/4 NPSM Faucet Knockout	5	0000000	00000	10	0000000	00000	0000000	000000

Zinc-Plated Steel

Drum Plugs									Snap-On Drum Plug Caps
Style	Drum Plug Type	Seal Material	Pipe Size	Gender	Opening Pressure Range	Features		Each	Pkg. Qty.		Pkg.
E	Standard	Buna-N Rubber	3/4 NPSM	Male	__	__	000000	00000	10	0000000	00000
E	Pressure Relief	Buna-N Rubber	3/4 NPSM	Male	0.5 psi-4 psi	Vent	0000000	0000	10	0000000	0000
E	Vacuum Relief	Buna-N Rubber	3/4 NPSM	Male	0.5 psi-4 psi	Vent	0000000	0000	10	0000000	0000
F	Standard	Buna-N Rubber	2 NPSM	Male	__	__	0000000	0000	10	0000000	00000
G	Pressure Relief	Buna-N Rubber	2 NPSM	Male	13 psi-15 psi	Vent	0000000	00000	10	0000000	00000

316 Stainless Steel

Drum Plugs							Snap-On Drum Plug Caps
Style	Drum Plug Type	Seal Material	Pipe Size	Gender		Each	Pkg. Qty.		Pkg.
H	Standard	Buna-N Rubber	3/4 BSPP	Male	0000000	000000	10	0000000	00000
H	Standard	PTFE Plastic	2 NPSM	Male	00000000	00000	__	000000	00
H	Standard	PTFE Plastic	3/4 NPSM	Male	00000000	00000	__	000000	00
J	Standard	Buna-N Rubber	2 BSPP	Male	0000000	00000	10	0000000	00000

Drum Plug Gaskets

Add a gasket or replace one that's worn out to ensure a tight seal.

For 3/4 Pipe Size
Material	Max. Temp., °F	Pkg. Qty.		Pkg.
Polyethylene Plastic	350°	50	0000000	000000
Buna-N Rubber	450°	100	0000000	00000
EPDM Rubber	450°	100	0000000	00000
For 2 Pipe Size
Polyethylene Plastic	350°	50	0000000	00000
Buna-N Rubber	450°	50	0000000	00000
EPDM Rubber	450°	50	0000000	00000

Thread Adapters for Drum Openings

Plastic BSPP

Plastic M56

Plastic M60

Plastic M64 and M70

Stainless Steel M56, M60, M64, M70, and BSPP

Convert drum openings with metric or BSPP threads to a 2 NPT pipe size.

M64 inlet thread size is also known as Buttress threads. M70 inlet thread size is also known as Mauser threads.

Inlet		Outlet
Pipe/Thread Size	Gender	Pipe Size	Gender	Seal Material	Max. Temp., °F		Each
Polypropylene Plastic
2 BSPP	Male	2 NPT	Female	EPDM Rubber	125°	0000000	000000
M56 Metric	Male	2 NPT	Female	EPDM Rubber	125°	0000000	00000
M60 Metric	Male	2 NPT	Female	EPDM Rubber	125°	0000000	00000
M64 Metric	Male	2 NPT	Female	EPDM Rubber	125°	000000	00000
M70 Metric	Male	2 NPT	Female	EPDM Rubber	125°	000000	00000
316 Stainless Steel
2 BSPP	Male	2 NPT	Female	__	250°	0000000	000000
M56 Metric	Male	2 NPT	Female	__	250°	0000000	000000
M60 Metric	Male	2 NPT	Female	__	250°	0000000	000000
M64 Metric	Male	2 NPT	Female	__	250°	0000000	000000
M70 Metric	Male	2 NPT	Female	__	250°	0000000	000000

Plastic Drum Faucets

Primarily used on drums, these faucets can also be used on tanks, carboys, and other containers.

Style B has a vent, so it can be used with ventless drums.

Style C can be used with a thread adapter to connect to a drum with a 2” Buttress or Mauser thread.

Style D has a spigot that swivels 360°.

Style F has a GHT outlet thread, which can be connected to a standard garden hose.

			Inlet		Outlet
Style	Wetted Parts Material	Color	Pipe Size	Gender	OD	Thread Size	Gender	Max. Temp., °F		Each
Polyethylene Plastic
A	Polyethylene Plastic	Semi-Clear	3/4 NPT	Male	7/8"	__	__	140°	000000	00000
B	Polyethylene Plastic, Polypropylene Plastic, Natural Rubber	Red	3/4 NPT	Male	7/8"	__	__	180°	0000000	0000
C	Polyethylene Plastic, EPDM Rubber	Brown	2 NPT	Male	2 1/4"	__	__	140°	000000	00000
D	Polyethylene Plastic, Fluoroelastomer Rubber	Blue	2 NPS	Male	1 1/2"	__	__	140°	000000	00000
E	Polyethylene Plastic, PTFE Plastic	Semi-Clear	1/2 NPT	Male	5/8"	__	__	175°	000000	00000
E	Polyethylene Plastic, PTFE Plastic	Semi-Clear	3/4 NPT	Male	5/8"	__	__	175°	000000	00000
F	Polyethylene Plastic, PTFE Plastic	Semi-Clear	3/4 NPT	Male	__	3/4" GHT	Male	175°	000000	00000

Metal Drum Faucets

All of these faucets are primarily used on drums, but can also be used on tanks, carboys, and other containers. If your drum has a 2" Buttress or Mauser thread, use drum thread adapters to attach drum faucets with pipe size 2 NPT threads.

Style C has a locknut with a rubber gasket that allows you to position the spigot in any direction. The locknut also provides a tight seal, even on drums with oversized or damaged threads.

Iron

		Inlet
Style	Wetted Parts Material	Pipe Size	Gender	Outlet OD	Lock Type	For Max. Shackle Dia.		Each
A	Iron, Brass	3/4 NPT	Male	3/4"	Padlockable	5/16"	000000	000000
A	Iron, Brass	1 1/2 NPT	Male	1 1/2"	Padlockable	5/16"	000000	00000
A	Iron, Brass	2 NPT	Male	1 3/4"	Padlockable	5/16"	000000	00000
A	Iron, Brass	3 NPT	Male	2 3/8"	__	__	000000	000000
B	Iron, Brass	2 NPT	Male	1 3/4"	Padlockable	5/16"	0000000	00000
B	Iron, Brass	3 NPT	Male	2 3/8"	__	__	0000000	000000
B	Iron, Brass	4 NPT	Male	4"	__	__	000000	000000
C	Iron, Brass	2 NPT	Male	1 3/4"	Padlockable	5/16"	0000000	00000

Aluminum

		Inlet
Style	Wetted Parts Material	Pipe Size	Gender	Outlet OD	Lock Type	For Max. Shackle Dia.		Each
D	Aluminum, Brass	3/4 NPT	Male	3/4"	Padlockable	5/16"	0000000	000000
D	Aluminum, Brass	2 NPT	Male	1 3/4"	Padlockable	5/16"	0000000	00000

Brass

		Inlet		Outlet
Style	Wetted Parts Material	Pipe Size	Gender	Pipe Size	Gender	Lock Type	For Max. Shackle Dia.		Each
E	Brass	3/4 NPT	Male	3/4 NPSH	Male	Padlockable	7/16"	000000	000000
E	Brass	3/4 NPT	Male	3/4 NPT	Female	Padlockable	7/16"	000000	00000
F	Brass, Chrome-Plated Brass, PTFE Plastic	3/4 NPT	Male	3/4 NPT	Female	Padlockable	9/32"	000000	00000
F	Brass, Chrome-Plated Brass, PTFE Plastic	1 NPT	Male	1 NPT	Female	Padlockable	9/32"	000000	00000

Self-Closing Drum Faucets

Push or pull the faucet handle to open; release the handle and the faucet automatically shuts off. These faucets are primarily used on drums, but can also be used on tanks, carboys, and other containers.

In case of fire, faucets with a flame arrester prevent flashback into the drum.

Style D can rotate to position the spout downward without damaging threads.

Style E can be used with a thread adapter to connect to a drum with a 2” Buttress or Mauser thread.

		Inlet		Outlet
Style	Wetted Parts Material	Pipe Size	Gender	OD	Thread Size	Gender	Lock Type	For Max. Shackle Dia.	Specifications Met	Features		Each
Zinc
A	Zinc, Acetal Plastic	3/4 NPT	Male	3/4"	__	__	Padlockable	9/32"	__	__	0000000	000000
A	Zinc, 304 Stainless Steel, Acetal Plastic	3/4 NPT	Male	3/4"	__	__	Padlockable	9/32"	__	Flame Arrester	0000000	00000
Brass
B	Brass, 304 Stainless Steel, PTFE Plastic, Nylon Plastic	3/4 NPT	Male	__	13/16"-27 UNF	Female	Padlockable	5/16"	FM Approved	Flame Arrester	0000000	00000
C	Brass, 302 Stainless Steel, PTFE Plastic, Buna-N Rubber	3/4 NPT	Male	3/4"	__	__	Padlockable	3/8"	UL Listed	__	0000000	00000
D	Brass, 304 Stainless Steel, PTFE Plastic	3/4 NPT	Male	__	13/16"-27 UNF	Female	Padlockable	5/16"	FM Approved	Flame Arrester, Adjustment Nut	0000000	00000
316 Stainless Steel
D	316 Stainless Steel, 303 Stainless Steel, 304 Stainless Steel, PTFE Plastic	3/4 NPT	Male	__	13/16"-27 UNF	Female	Padlockable	5/16"	FM Approved	Flame Arrester, Adjustment Nut	0000000	000000
Iron
E	Iron, Brass	2 NPT	Male	1 3/4"	__	__	Padlockable	5/16"	__	__	0000000	000000

Optional 8" Extension for Brass Styles B and D	0000000	Each	000000
Optional 6" Extension for Stainless Steel Style D	0000000	Each	00000

Food Industry Self-Closing Drum Faucets

Push or pull the faucet handle to open; release the handle and the faucet automatically shuts off. These drum faucets meet NSF/ANSI 169 for special-purpose food equipment.

		Inlet
Wetted Parts Material	Color	Thread Size	Gender	Outlet OD	Max. Temp., °F	Specifications Met		Each
Polypropylene Plastic
Polypropylene Plastic, Silicone Rubber	Black	5/8"-18 UNF	Male	5/8"	170°	NSF/ANSI 169	0000000	000000

Drum Faucets with Liquid-Level Gauge

The gauge provides an instant visual check of liquid levels in your drum without interfering with the use of the faucet.

	Inlet
Wetted Parts Material	Pipe Size	Gender	Outlet OD	Max. Temp., °F	Lock Type	For Max. Shackle Dia.		Each
Brass
Brass, Zinc-Plated Iron, 300 Series Stainless Steel, Glass, Buna-N Rubber	3/4 NPT	Male	7/8"	225°	Padlockable	9/32"	000000	0000000

Drum Faucets for Viscous Liquids

Use these faucets with fluids at least as thick as motor oil.

Style B can be used with a thread adapter to connect to a drum with a 2” Buttress or Mauser thread.

		Inlet		Outlet
Style	Wetted Parts Material	Pipe Size	Gender	OD	Thread Size	Gender	Lock Type	For Max. Shackle Dia.	Specifications Met		Each
Brass
A	Brass, 304 Stainless Steel, PTFE Plastic, Nylon Plastic	3/4 NPT	Male	__	13/16"-27 UNF	Female	Padlockable	5/16"	FM Approved	00000000	000000
B	Brass, 304 Stainless Steel, PTFE Plastic	2 NPT	Male	1 5/8"	__	__	__	__	FM Approved	000000	000000

Replacement PTFE Plastic Gate Blade for Style B, 2 1/2" Wd. × 2 3/4" Ht. × 5/32" Thick.	000000	Each	000000
Optional 8" Extension for Style A	0000000	Each	00000

Drum Vents

Prevent drum failure by using these vents to release pressure and vacuum buildup caused by draining liquids and sudden temperature changes. In case of fire, a flame arrester prevents flashback into the drum.

Style D has a removable cap so it can be used as a fill opening.

Style E comes with two carbon filters. The filter traps 99% of vapors.

	Activation
Style	Pressure Relief	Vacuum Relief	Seal Material	Flame Arrester Material	Pipe Size	Gender	Opening Pressure Range	Specifications Met		Each
For Horizontal Drums
316 Stainless Steel
A	Automatic	Manual	Fluoroelastomer Rubber	304 Stainless Steel	2 NPT	Male	3 psi-8 psi	FM Approved	0000000	0000000
Brass
A	Automatic	Manual	Buna-N Rubber	Brass	2 NPT	Male	3 psi-8 psi	FM Approved	0000000	00000
For Vertical Drums
Polyethylene Plastic
B	Automatic	Automatic	Buna-N Rubber	Zinc-Plated Steel	2 NPT	Male	3 psi-8 psi	FM Approved	0000000	00000
B	Automatic	Automatic	Buna-N Rubber	304 Stainless Steel	2 NPT	Male	3 psi-8 psi	FM Approved	0000000	000000
Brass
C	Automatic	Automatic	Buna-N Rubber	Brass	2 NPT	Male	3 psi-8 psi	FM Approved	000000	000000
D	Automatic	Automatic	Buna-N Rubber	Brass	2 NPT	Male	3 psi-8 psi	FM Approved	0000000	000000
E	Automatic	Automatic	Buna-N Rubber	Brass	2 NPT	Male	3 psi-8 psi	FM Approved	0000000	000000

Thread Protectors for Drum Openings

Screw these metal protectors into your plastic drum openings to replace threads that can become damaged with frequent use.

Inlet		Outlet
Pipe Size	Gender	Pipe Size	Gender	Max. Temp., °F		Each
316 Stainless Steel
2 NPT	Male	2 NPT	Female	275°	000000	000000

Locking Fill Caps for Drums

Male

Female

Prevent tampering with the contents of your drum while allowing access for filling.

Iron
Pipe Size	Gender	Dia.	Ht.	Lock Type	Lock Included	For Max. Shackle Dia.		Each
2 NPT	Male	3 3/8"	2 1/2"	Padlockable	No	5/16"	0000000	000000
2 NPT	Female	3 1/4"	1 5/8"	Padlockable	No	5/16"	0000000	00000
3 NPT	Female	5 1/8"	2 1/8"	Padlockable	No	5/16"	0000000	00000
4 NPT	Female	6"	2 1/4"	Padlockable	No	5/16"	0000000	00000

Lockable Breather Vents with Cap

Secure access to vented openings in pipe and tanks—the cap can be locked to prevent tampering. These breather vents allow you to add a filling port to your hydraulic tank while protecting against excess pressure and vacuum. Use them to stop debris from entering your tank. Breather vents mount on top of standard tank openings with included hardware. Padlock is not included.

For technical drawings and 3-D models, click on a part number.

Steel Body

Steel with 304 Stainless Steel Screen

Steel with Nylon Plastic Screen

			Material
For Opening Dia.	Ht.	For Use With	Cap	Screen	Mount Type	Bolts Included	Removes Particle Size Down To, microns	For Max. Padlock Shackle Dia.		Each
2 1/8"	5 1/8"	Air, Oil	Steel	304 Stainless Steel	Flange	Yes	10	3/8"	0000000	000000
2 1/8"	5 1/8"	Air, Oil	Steel	304 Stainless Steel	Flange	Yes	40	3/8"	0000000	00000
2 1/8"	6 1/8"	Air, Oil	Steel	Nylon Plastic	Flange	Yes	10	3/8"	0000000	00000
2 1/8"	6 1/8"	Air, Oil	Steel	Nylon Plastic	Flange	Yes	40	3/8"	0000000	00000

Aluminum Body and Fitting

Aluminum with Stainless Steel Screen

					Material
Pipe Size	Max. Temp., °F	Ht.	Dia.	For Use With	Cap	Screen	For Max. Padlock Shackle Dia.		Each
NPT Male
2	200°	4 1/2"	5 5/8"	Air, Oil, Water	Aluminum	Stainless Steel	3/8"	0000000	000000

About Noise, Filtration, and Flow Ratings

Drum Plugs

Drum Plug Gaskets

Thread Adapters for Drum Openings

Plastic Drum Faucets

Metal Drum Faucets

Self-Closing Drum Faucets

Food Industry Self-Closing Drum Faucets

Drum Faucets with Liquid-Level Gauge

Drum Faucets for Viscous Liquids

Drum Vents

Thread Protectors for Drum Openings

Locking Fill Caps for Drums

Lockable Breather Vents with Cap